Transient Ischemic Attack (TIA)

A transient ischemic attack (TIA) occurs when blood flow to a portion of the brain is briefly interrupted. The interruption is usually caused by a blood clot or narrowing of a blood vessel. Unlike a full stroke, the blockage resolves quickly, and symptoms disappear within 24 hours, often within minutes.

Even though symptoms go away, a TIA should be treated as a medical emergency. It signals an increased risk of future stroke and requires prompt evaluation to identify the cause and prevent potentially life-threatening complications.

TIA symptoms begin suddenly and resemble the symptoms of a stroke. Common warning signs include:

• Weakness or numbness on one side of the body
• Facial drooping
• Difficulty speaking or understanding speech
• Sudden vision loss or blurred vision in one or both eyes
• Dizziness or loss of balance
• Difficulty walking
• Sudden confusion
• Severe headache without a known cause

Because symptoms often disappear quickly, some people ignore them. However, immediate medical attention is essential.

A TIA develops when blood flow to the brain is temporarily blocked. The blockage may result from a blood clot traveling from another part of the body or from narrowing of arteries supplying the brain.

Risk factors include:

• High blood pressure
• High cholesterol
• Diabetes
• Smoking
• Obesity
• Physical inactivity
• Heart rhythm disorders such as atrial fibrillation
• Carotid artery disease
• Prior stroke or TIA
• Family history of cardiovascular disease
• Advanced age

Some patients may require evaluation for conditions such as aneurysm or other cerebrovascular disorders that can increase stroke risk.

Because TIA symptoms may resolve before evaluation, diagnosis focuses on identifying evidence of interrupted blood flow and determining the cause.

Diagnostic testing may include:

• Neurological examination
• Brain MRI or CT scan
• Blood tests
• Electrocardiogram (ECG)
• Echocardiogram
• Carotid ultrasound
• CT angiography or MR angiography

If significant carotid artery narrowing is identified, specialists may recommend procedures such as carotid angioplasty and stenting.

Treatment aims to reduce the risk of future stroke and address the underlying cause of the TIA.

Treatment options may include:

• Antiplatelet medications such as aspirin
• Blood-thinning medications when appropriate
• Cholesterol-lowering medications
• Blood pressure management
• Diabetes management
• Smoking cessation support
• Lifestyle modifications

For some patients, advanced vascular procedures may be recommended, including:

• Carotid angioplasty and stenting
• Endovascular treatments when cerebrovascular abnormalities are identified
• Emergency stroke interventions if symptoms progress to a full stroke

Treatment plans are individualized based on each patient's risk factors and overall health.

Although a TIA does not typically cause permanent brain injury, it significantly increases the likelihood of future complications.

Potential complications include:

• Ischemic stroke
• Recurrent TIAs
• Long-term disability from future stroke
• Cognitive impairment
• Increased cardiovascular risk

Research shows that the risk of stroke is highest in the days and weeks immediately following a TIA, making prompt evaluation critical.

Many TIAs can be prevented by addressing underlying vascular risk factors.

Prevention strategies include:

• Maintaining healthy blood pressure
• Managing cholesterol levels
• Controlling diabetes
• Quitting smoking
• Exercising regularly
• Following a heart-healthy diet
• Maintaining a healthy weight
• Taking prescribed medications consistently
• Attending routine medical appointments

Patients with significant vascular disease may benefit from specialized cerebrovascular care and ongoing monitoring.

If you experience symptoms of a transient ischemic attack—even if they resolve quickly—seek emergency medical care immediately. Early evaluation can identify the cause, reduce stroke risk and help protect long-term brain function.

To schedule a visit with a Baptist Health Brain & Spine Care provider, fill out an appointment request form or call 833-596-3876.